1. Dihadron and γ-hadron correlations from jet-induced medium excitation in high-energy heavy-ion collisions
- Author
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Wang, Xin-Nian, Li, Han-Lin, Liu, Fu-Ming, Ma, Guo-Liang, and Zhu, Yan
- Subjects
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ANGULAR correlations (Nuclear physics) , *JETS (Nuclear physics) , *NUCLEAR excitation , *HEAVY ion collisions , *QUARK-gluon plasma , *PARTONS , *MONTE Carlo method - Abstract
Abstract: Jet propagation is shown to produce Mach-cone-like medium excitation inside a quark-gluon plasma. However, only deflection of such medium excitation and jet shower partons by radial flow leads to double-peaked dihadron correlation in high-energy heavy-ion collisions. Dihadron correlations from harmonic flow, hot spots and dijets are studied separately within the AMPT Monte Carlo model and all lead to double-peaked dihadron azimuthal correlation. The γ-hadron correlation has similar double-peak feature but is free of the contributions from harmonic flow and hot spots. Dihadron and γ-hadron correlations are compared to shed light on jet-induced medium excitation and hot spots in an expanding medium. [Copyright &y& Elsevier]
- Published
- 2011
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